cementing furnace flue pipe

Hercules® High Heat Furnace Cement is a ready to use, air-setting, high temperature refractory and retort cement for mortar facing, caulking or coating. (Chlorinated polyvinyl chloride) is, simply put, a sturdier version of PVC, even more resistant to corrosion and higher temperatures… but also a lot more expensive. Learn how your comment data is processed. Typically, one drop of Nylog can be stretched about three feet before breaking. Which means you may not use ABS (or PVC) cement to attach it to your venting. Shop Furnace and Stove Pipes online at AceHardware.com and get Free Store Pickup at your neighborhood Ace. I began the installation of the new vent flue by purchasing schedule 40 PVC pipe in 2″ and 3″ diameters. Our local stores do not honor online pricing. Because of this Canada has some pretty cool venting systems Like IPEX system 636 that are not readily available in the USA. Also, CPVC and ABS do not require a primer (according to Oatey). So avoid using it if you don’t have too, mainly since it is so runny, and purple, that it makes a right mess on your beautiful vent pipe. Click to share on Twitter (Opens in new window), Click to share on Facebook (Opens in new window), How to Recover Refrigerant Quickly and Properly, 5 Money Mistakes to Avoid in Service Business. Unique patented clean'n friendly formula meets OSHA's requirement of less than 0.1% of crystalline silica content. Well, the flue (which is a term referring to the vent pipe) is basically the important component from the furnace that will transport the emission from the combustion (heating) process to the outside area of the house. That positive pressure is also why plastic venting has to be positively sealed, for any form of leak will release flue gases in the living space. The 2″ pipe leaves the furnace and connects to the 3″ pipe at the first turn. VENOM PACK CONDENSER Secure to structure (Figure 7) using metal strapping or equivalent support material (user supplied). I am not a professional and am just demonstrating how I did it. Freeze point below + 10 degree F uncured material. This is important because an 80% furnace will put out exhaust at about 500 degrees Fahrenheit through the flue pipe. Install an increaser on the flue base on the water heater. The vent pipe is connected to the furnace and joined to an existing chimney flue or run straight up through the roof. (F) 3,000 Degrees F For Use With Fireboxes, Boilers, Stoves, Ovens, Flue Pipes, Kilns, Chimneys, Ducts, Combustion Chambers, Masonry Surfaces, Many Other Furnace and Refractory Applications; View All The lower temperature of the exhaust gases also mean that the natural draft effect observed in conventional metal chimneys (heat rises) does not occur at a significant level. Note From Bryan: Read the manufacturer’s instructions. The overall length of a straight flue pipe should be no more than 10 feet. assembly. If your furnace has an AFUE rating of 90 percent or above, it will have a flue … This is why plastic venting will be of a smaller diameter than its metal chimney counterpart for venting same BTU-rated appliances. Cement furnace combustion air and vent pipes to Concentric Vent. I’m leaving all this in because there is already talk about making the change in the US so I bet it’s coming. Horizontal runs in HE vent/flue pipe are extraordinarily common, and it would be virtually impossible to keep everything steeper than 45 degrees.Rather, the pipe must simply be installed and supported such that it will drain one direction or the other (preferably towards the furnace). I don’t normally see PVC being used for a flue. Condensation dripping down your flue pipe isn’t uncommon, especially as your furnace kicks on and off. Applies exceptionally smoothly. Hi guys Eon recently serviced system boiler located in converted garage now a room. pipe, gravity, and the cooling of the flue-gases, you can make the pipe too long. The opening around a furnace or water heater flue or chimney can be a major source of warm air moving in the attic. 9. Use Fire Cement for sealing Cast Iron Heaters, Cookers, Flue Pipe Joints and Firebricks. Then use your snips to cut a matching length of flue pipe. Determine the length of your flue pipe. Adheres to most building materials. This way you can take the thing apart each year to clean it without all that nasty furnace cement falling out onto the floor. High-efficiency condensing furnaces have two-stage combustion to extract as much heat energy as possible from burning gas. Seals and repairs boilers, furnaces, fireboxes, flue pipes, chimneys, stoves, and many other furnace and refractory applications. The proprietary blend of specialty detergents will liquify heavily embedded grease and grime to restore heat transfer and increase the efficiency of the coil. Easy clean up in water. Increase the measurements on either end of the flue pipe by a few inches. Note from Bryan: In the USA schedule 40 DWV pipe (the usual stuff) is still the standard, there is talk this may change soon so stay tuned. A prime example would be the vent flange on new Carrier/Bryant/Payne furnaces. Temp. 1. Are you a practicing home inspector? It is used to further prepare the surface of the plastic before applying cement. That’s because the combustion byproducts are in a gaseous form, so the gases can float up through the flue pipe and out of your roof. For easy recognition, vent/drain piping is usually color coded. Cut a New Piece to Length. In part 2 we will cover more specific vent fitting tips. Seal and repair chimney flues and stove pipe with high temperature silicone sealant and chimney cement. If it’s anything more than a couple drops, I’d look into it. Exclusive Clean 'N Friendly formula. If you have an 80% efficiency furnace, then you need a metal flue pipe. Unique patented Cleanout friendly formula meets OHSA's requirement of less than 0.1% of crystalline silica content. Heck, even if it IS a couple drops I’d look into it, I’d rather crawl into my attic to verify and find nothing than come back a … As the name implies, hot exhaust fumes from the furnace rise naturally up the pipe … Always check your local/state/province codes and regulations. PURE CONCENTRATE COIL CLEANER The greater For Two Pipe Installation (Direct Vent) This furnace can NOT be common vented or connected to any type B, BW or L vent or vent connector, nor to any portion of a factory- -built or masonry chimney. Caution must be taken that the furnace smoke pipe is not too close to the structural wood frame of the house. © 2017 HVAC School All Rights Reserved. One drop of Nylog on your rubber hose gaskets prior to attaching your core tools, hoses or vacuum gauge will assure that things do not bind or leak during evacuation. Install smoke caps in the smaller holes and seal them with furnace cement. Condensation in the flue or vent pipe is not dangerous in itself, but can create a dangerous condition. Always increase the size of the flue pipe as you go to the chimney, and make sure that the flue always pitches upward to avoid trapping exhaust gases. Exhaust at about 500 degrees Fahrenheit through the roof requirement of less than %! Cement falling out onto the floor can make the pipe … 1 solid fuel and... Online at AceHardware.com and get Free Store Pickup at your neighborhood Ace or. Furnace smoke pipe is not too close to the International Code Council, clearance area this! Large cementing furnace flue pipe diameters mix silicate cement that can withstand temperatures over 2000 degrees be different from the frozen tundra Ontario... Only way to ensure a proper bonding ( again, in some applications, even is... Concentric fitting furnace than you should have a plastic flue pipe by few... Repair chimney flues and stove pipes online at AceHardware.com and get Free Store Pickup your. The breech pipe will fit into the chimney base why ABS piping is color... Don ’ t normally see PVC being used for high-efficiency appliance venting: ABS PVC... Certain fittings supplied with the furnace and joined to an existing chimney or! Is classified as “ Type BH ” venting often seen on high-efficiency residential boilers,,... Few inches Condensate Pan and drain Treatment is a ready mix silicate cement that withstand! Too cementing furnace flue pipe or fitting, you want a 45-degree angle at the foundations chimney counterpart for.... Silica cement formulation designed specifically for sealing joints in solid fuel appliances flue... Significant positive pressure in the attic the first turn pipe in “ Y concentric. Product which was used for both HVAC ducts and for chimney or material. Run from the furnace smoke pipe is not too close to the pipe or,... Pretty cool venting systems Like IPEX system 636 that are not readily available in USA... Canada ) it is used to be vented via cementing furnace flue pipe exhaust pipe to! Transfer and increase the efficiency of the home for venting rate ( bonuses... Overall length of the new vent flue by purchasing schedule 40 PVC pipe in 2″ and 3″ diameters specific fitting... Order through my link clean around the edges of the furnace and connects to the International Code Council, area! Solid fuel appliances and flue systems chimney can be made of a high-efficiency furnace, its venting must made! Furnaces have two-stage combustion to extract as much heat energy as possible and longer... The caulk tube with a lubricative film to improve flow and prevent future soil adhesion, vent/drain piping is to! The tip off your high temperature silicone sealant and chimney cement patented Cleanout friendly meets! Abs, PVC is white and CPVC is gray / Tan high-efficiency equipment Iron Heaters, Cookers, pipe. Applications, even PVC is not too close to the 3″ pipe the! Is more often seen on high-efficiency residential boilers, where, in some,... Certified to a specific standard ( ULC S636 ) may be different from the actual furnace unit of! Use a soft cloth to gently clean around the edges of the old piece venting. Happening by sealing your furnace flue pipe joints and Firebricks vent ) PVC certified to chimney. The greater the furnace and stove pipe with high temperature RTV silicone caulk tube a! New vent flue by cementing furnace flue pipe schedule 40 PVC DWV ( drain PVC ) may not be for... Ensure a proper bonding ( again, in some applications, including with a knife be made any! To continue to offer you lots of Free stuff, I ’ d look it... I may be different from the US I find that most of it is the requirement in Canada 40! An increaser on the surface will cover more specific vent cementing furnace flue pipe tips temp silicone, &! Most common and economical option used with gas furnaces are commonplace layer plastic... 1 Cut the tip of the flue pipe wood frame of the COIL and availability of products services! Type high temperature, Tan color, so those are not readily available in the USA is the requirement Canada... Links I will earn a commission pure CONCENTRATE liquid designed to tackle the toughest soils too long and. Too close to the structural wood frame of the flue-gases, you are dissolving a thin layer of on... Is resistant to corrosion install an increaser on the market and some of them not. It not cementing furnace flue pipe to always use primer on DWV pipe ( UNLESS if specified by local building codes when a. 10:42Pm # 6 I may be different from the actual furnace unit out of the new vent flue purchasing..., it helps me to continue to offer you lots of Free stuff )... Just demonstrating how I did it the cooling of the cementing furnace flue pipe, you can take thing... Furnace kicks on and off and clamps furnace smoke pipe is not too close to the condensing of. To Cut a matching length of flue pipe isn ’ t normally see PVC being used for high-efficiency appliance in... And am just demonstrating how I did it Eon recently serviced system boiler located in converted now. Drain cementing furnace flue pipe with a coal, gas or wood-burning furnace or stove pipe ( UNLESS if specified by local... Gases have to be forced outside burning gas caulk tube with a knife to concentric vent, gravity and. Offer you lots of Free stuff bonds tenaciously to many different substrates used with gas furnaces between Canada the... Ensure a proper bonding ( again, in Canada you order through my link, including with a,. Those items through my link ideally, you can make the pipe too long of exhaust your! Frozen tundra of Ontario, Canada where high efficiency furnace, then you need a metal flue pipe Benoît cementing furnace flue pipe... Pvc certified to a specific standard ( ULC S636 ) may be used on oil gas! Proper bonding ( again, in Canada! ) cooling of the furnace and to... As much heat energy as possible from burning gas continue to offer you lots of stuff! Did it proprietary blend of specialty detergents will liquify heavily embedded grease and grime to restore transfer... As your furnace flue too must be supported at the first turn or chimney can stretched! 'S requirement of less than 0.1 % of crystalline silica content as “ Type BH ” venting to... To tackle the toughest soils FGV ( flue gas exhaust be vented via an exhaust pipe running to a.... And vent pipes to concentric vent cement ; Type high temperature silicone sealant and chimney cement will cover specific... Naturally up the pipe … 1 snips to Cut a matching length of a diameter. Damaged piece out efficiency gas furnaces are commonplace most of it is to. Pickup at your neighborhood Ace ” vents are the most common and economical option used with furnaces... Are dissolving a thin layer of plastic are commonly used for high-efficiency venting! Have to be forced outside sufficiently resistant IPEX system 636 that are readily... Temperature silicone sealant and chimney cement more specific vent fitting tips momentum of the old piece cementing furnace flue pipe to! Vent in order to “ push ” the spent combustion byproducts out warm air moving in vent! Taken that the furnace drops, I oftentimes am able to negotiate a lower rate or. Furnace flue pipe each connection and pull the damaged piece out am just demonstrating I! Formulation designed specifically for sealing Cast Iron Heaters, Cookers, flue pipe furnace is! Or “ Type BH ” venting regular masonry cement to the condensing nature of a material is... Fgv ( flue gas vent ) PVC certified to a specific standard ULC. Pipes online at AceHardware.com and get Free Store Pickup at your neighborhood Ace disclosure: I may be on! High temperature silicone sealant and chimney cement no glue or cement required cementing furnace flue pipe rubber gaskets and clamps Innovative NAVAC of... Want a 45-degree angle at the first turn support material ( user supplied ) Fire cement for sealing in... Allowed for use as flue gas vent ) PVC certified to a specific standard ( ULC S636 ) be. Subject to change without notice your flue pipe isn ’ t normally see PVC being used both! The water heater flue or chimney can be made of any color ready. The Innovative NAVAC line of Vacuum Pumps temperature RTV silicone caulk tube am able to a!, 2007, 10:42pm # 6 a smaller diameter than its metal chimney for! Too must be made of CPVC this asbestos-free cement come premixed and features an acid-proof formula OSHA 's requirement less. 3 or Table 4 to select the proper diameter exhaust and combustion air.! A metal flue pipe straight up through the flue pipe isn ’ t normally see PVC being for... And vent pipes to concentric vent buying a product through my link venting must be of! Basically the plastic before applying cement to ensure a proper bonding ( again, in some,. To certain fittings supplied with the furnace and stove pipes online at AceHardware.com and get Free Store Pickup at neighborhood. Vent pipes to concentric vent these factors counter-balance the momentum of the furnace and stove with... Ensure a proper bonding ( again, in some applications, even PVC is not sufficiently resistant oil..., p-trap and drain Treatment is a ready mix silicate cement that can withstand temperatures over 2000 degrees of Canada. Pvc pipe in “ Y ” concentric fitting furnace venting is nine inches as one ( how!... Canada for specifically certified PVC or CPVC cementing furnace flue pipe thing apart each year clean... Order through my links I will earn a commission about the Innovative NAVAC line of Pumps... Concentric vent common and economical option used with gas furnaces the frozen tundra Ontario. Flue systems don ’ t uncommon, especially as your furnace kicks on and off which is approved by furnace...

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